Purple Robgoblins? :O

I was running around in Snowhill, trying to complete a quest, when I made an interesting discovery.

Hiding behind some trees right beside the Post Office is a PURPLE Robgoblin! What's going on here? Robgoblins are supposed to be green! I snapped a shot of the monstrosity...

It wasn't long at all until I realized that my purple friend here looked a lot like the common enemy, the Robgoblin Fishmonger.

Except for the obviously different skin color, of course.

Also in Snowhill, I have noticed purple rabbits, and one Blue Squirrel that runs around. That Blue Squirrel is part of a quest I completed before (there's also a Brown Squirrel in Sanctuary and a Purple Squirrel in Briarwood!), where I learned that squirrels changed colors depending on what area they were in. Because of the purple rabbits in Snowhill, I figured the same goes for them.

Maybe it goes for Robgoblins, too? Maybe this purple Robgoblin isn't the only oddly colored Robgoblin in the game?

Either way, I believe it's an interesting discovery. I showed my friend and fellow guild member, Annya, and she gave me the idea to post it here.